AdelaideFiller3
Created page with "<br>The tower of Pisa has been leaning so lengthy -- nearly 840 years -- that it's pure to assume it's going to defy gravity eternally. However the well-known structure has been in danger of collapsing almost since its first brick was laid. It started leaning shortly after building began in 1173. Builders had only reached the third of the tower's planned eight stories when its foundation began to settle unevenly on tender soil composed of mud, sand and clay. In consequen..."